I did a little Wheelin'/Dealin' for a couple of sets of tire chains. One set is too short & one set is too long. The too short ones are a project for another day (They're bull chains) but the too long ones are going on the Sears 7.

The ones that are too long are giving me fits in the following way: If I cut them where they need cut, I will loose a cross bar. I am able to take it off & relocate it, but it'll be 2 links instead of 3 in between the cross bars there. If I connect it at the cross bar, the chain has one link's worth of slop, but I can take that up with cross springs.

I'm no expert but I would agree with the previous posts. The chains that came with my 600 are a little big I always thought but seem to work well. You will have the cross link go under the tire perhaps a little loose, but it will be there for the traction you want. Just my thoughts.